Certification Scope & Interpretation
Certification confirms that equipment complies with defined technical requirements within a documented scope, configuration, and set of operating conditions.
This page defines how certification scope is interpreted and clarifies the limits of responsibility associated with certified hazardous area equipment.
What Certification Confirms
- Compliance with applicable standards and protection concepts
- Testing and evaluation of documented product configurations
- Defined operating limits and environmental conditions
- Marking and documentation corresponding to approved scope
What Certification Does Not Confirm
- Suitability for a specific site or installation
- Compliance of accessories or modifications not documented
- Correct installation, wiring, or maintenance practices
- Approval by local Authorities Having Jurisdiction (AHJ)
Role of Installation and Configuration
 Certification applies only when equipment is installed and configured in accordance with documented conditions.
Installation practices, accessories, mounting methods, and environmental conditions may affect compliance and are outside the scope of certification.
Interpretation Boundaries
- Certification scope is defined by official documentation
- Interpretation must consider configuration, environment, and use
- Assumptions beyond documented scope are not valid
- Responsibility boundaries must remain clearly defined
Relationship to Market Access and Local Approval
Certification does not guarantee market access or local approval.
Acceptance for use remains subject to national regulations, local codes, and AHJ decisions.
Governance & Responsibility
Certification scope interpretation, documentation governance, and update responsibility are maintained under the ExPC Technical Authority.
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Reviewed and maintained by ExPC Technical Authority
Last reviewed: January 2026
